Set TvBottomSheetActivity as unrestricted keep-clear area

This makes the Tv Pip move away from the dialog in order to not cover
its content

Bug: 227596282
Test: manual: start activity in Pip; start Duo and send:
      adb shell cmd sensor_privacy enable 0 microphone && \
      adb shell appops start com.google.android.apps.tachyon 27
Change-Id: Ifb0a11cc6c09b2b088d8a28c6016b831f5c57ac9
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 290ce34..4d0888a 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -323,6 +323,8 @@
     <!-- To read safety center status -->
     <uses-permission android:name="android.permission.READ_SAFETY_CENTER_STATUS" />
 
+    <uses-permission android:name="android.permission.SET_UNRESTRICTED_KEEP_CLEAR_AREAS" />
+
     <protected-broadcast android:name="com.android.settingslib.action.REGISTER_SLICE_RECEIVER" />
     <protected-broadcast android:name="com.android.settingslib.action.UNREGISTER_SLICE_RECEIVER" />
     <protected-broadcast android:name="com.android.settings.flashlight.action.FLASHLIGHT_CHANGED" />